Jitsu wa Imōto deshita: Saikin Dekita Giri no Otōto no Kyorikan ga Yatara Chikai Wake

When an unexpected family merger brings a new stepbrother into her life, one young woman finds her quiet routine completely upended. What starts as a typical adjustment to a blended household quickly takes an unusual turn as her new sibling exhibits an almost startling lack of personal boundaries, creating a dynamic that's both baffling and undeniably intriguing. Navigating the delicate balance of newfound familial bonds and increasingly close quarters, she must decipher the true intentions behind his surprisingly intimate approach. Is it an innocent expression of affection, a misunderstanding of social cues, or something far more complex bubbling just beneath the surface? This delightful series explores the humorous and heartwarming chaos that ensues when family ties become a little too close for comfort.

✦ AI-drafted summary